Stream Flow Data

Stream flow and reservoir water level information may be obtained by calling 1-800-422-3143 toll-free, or use the links below.

Idaho Power River Flow and Reservoir Information

Idaho Power’s Stream Flow Data provides river flow readings for various locations on the Snake River and its tributaries. You can find flow information from gages that Idaho Power manages including:

  • Brownlee
  • Hells Canyon
  • Swan Falls
  • Milner Power Plant to Star Falls Reach
  • Milner Reach

We measure, collect and prepare data helpful to public and government agencies in assessing hydrologic conditions such as floods or droughts and in managing water resources.

We offer a variety of ways to access flow information:

Find the stream flow area and gauges you’re seeking.

Can’t find what you want? Check out our Frequently Asked Questions.

Other flow-related sites providing data for portions of the Snake River, not influenced by Idaho Power, include: